Fan attachment for sewing-machines.



PA TENTED MAY 5, 1903.

P. HOLZMARK. 7 FAN ATTACHMENT FOR. SEWING MACHINES.

APPLIUATION FILED FEB. 12, 1903.

N0 MODEL.

UNTTED STATES Patented May 5,

PATENT ()rmcn.

FANNY HOLZMARK, OF ST. LOUIS, MISSOURI.

FAN ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION formingpart of Letters Patent No. 727,365, dated May 5,1903.

Application filed February 12, 1903. Serial No. 143,059. (No model.)

' To in whom it 1nd concern:

Be it known that I, FANNY HOLZMARK, a citizen of the United States,residing at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Fan Attachments for Sewing-lVIachines, of whichthe following is a specification containing a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention relates to the class of devices above referred to; and itconsists in the novel construction hereinafter described and claimed.

The object of my invention is to provide an improved means for securingseparate fanblades tothe fiy-wheelofasewing-machineand also to providean improved fan-blade which will be very simple and cheap andconstructed in scoop shape, so that it will throw a current of airtoward the operators face.

Figure l is an elevation of a sewing-machine fiy-wheel having myinvention. applied thereto. Fig. 2 is a section of edge view of same.Fig. 3 is a frontview of oneof the fan-blades enlarged. Fig. 4 is an endview of the same.

1 indicates the fly-wheel, to which the fanblades are to be attached.

My improved fan-blade is scoop shape and has a wide flange 2 extendingsubstantially at right angles to the direction of rotation, so as topresent a large area to the air, and the blade has also an integralflange 3 extending at right angles to the flange 2 and locatedsubstantially edgewise as regards the direction of rotation. Projectingfrom the front edge of the flange 3, near the base thereof, is anintegral perforated ear 4. Said ear extends in a direction parallel tothat of the base of the flange 2, and said flange is perforated near itsbase, and apin or bolt 5 is passed through said perforation and alsothrough the perforation in said ear 4.. Mounted upon said pin is acoiled spring 6, having arms 7 and 8. Projecting from the base of thesaid flange 3 is an integral clamping-jaw 9, having a strengthening-rib9. 10 indicates another clamping-jaw, which is located opposite the saidjaw 9 and is provided with an integral 5o thumb-piece 11 and oppositeperforated ears l2, and this jaw also has a strengthening-rib 12. Thecars 12 are mounted upon the said pin 5 with said spring 6 between themand so that'the arm 7 of said spring presses against the inner surfaceof the flange 3, and the other arm 8 of said spring normally pressesagainst the said thumb-piece 11. Said jaws are provided with leather orrubber lining 13.

The operation is as follows: One or more of the fan-blades may be usedupon the sewing-machine fly-wheel; but I prefer to use at least twoblades in order that one may balance the other. In the present instanceI have shown three blades applied to the flywheel. In applying theblades all that is necessary is for the operator to grasp the blade andcompress the thumb-piece 11 against the power of the spring 6, therebycausing the arms 7 and 8 of said spring to move toward each other andmoving the said jaw 10 away from the fixed jaw!) a suitable distance topermit the rim of the fly-wheel to pass between said jaws, when thepressure upon the thumb piece should be removed, and the spring willthen cause the said jaws to forcibly engage the said fly-wheel. Bothjaws are of course curved to conform to the outline of the fly-wheel, asshown. After the flanges have been placed in position they will besecurely held in place by' the action of the said spring and said curvedjaws, but may of course be removed at any time ata moments notice. Whenthe fly-wheel is revolved in the direction indicated by the arrow inFig. 1, the fan-blades will be forced into contact with the air and willnot only act as' an ordinary fan, but owing to their peculiar scoopshape they will concentrate a current of air and throw it laterallytoward the left side of Fig. 2 in the direction usually assumed by theoperators face.

This construction has proven very satisfactory in experimental use.

Having thus described my invention, what I claim as new, and desire tohave secured to me by the grant of Letters Patent, is

An improved detachable fan-blade for sewing-maehines, comprising a blademade in name to this specification in presence of two scoop shape andhaving flanges, one of said subscribing witnesses. flanges having anintegral perforated ear, a fixed jaw, and a movable jaw pivotally mount-FANNY 'HOLZMARK' 5 ed between said perforated ear and the other\Vitnesses:

flange, substantially as specified. ALFRED A. EIOKs,

In testimony whereof I have signed my JOHN C. HIGDON.

